Die box for wiredrawing machinery



June 3, 1924. 1,496,156

4 J. R GEORGE ET AL DIE BOX- FOR WIREDRAWING MACHINERY -Filed Feb. 13, 1922 J'erovne: fieorqe Patented June 3, i924.

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. nane JEROME R. GEORGE, OEWO'RCESTER, AND ELBERT H. CARROLL, OF WEST BOYLSTON, if

MASSACHUSETTS, ASSIGNORS TO MORGAN CONSTRUCTION COMPANY, OF WORCES- TER,'MASSACHUSETTS, A CORPORATION OF MASSRCHUSET'IS.

DIE BOX FOR WIREDRAWING- MACHINERY.

Application filed February 13, 1922. Serial No. 536,394.

To all whom it may concern:

Be it known that we, JEROME R. GEORGE and ELBEn'r H. CARROLL, both citizens of the United States, residing, respectively, at WVorcester and Vest Boylston, in the county of Vorcester and Commonwealth ofing instantly adaptable to dies of various sizes, without affecting the rigidity with which the die member is held.

The several features and advantages of om impro ed construction are set forth in detail in the following description, reference being had to the accompanying drawings, wherein- Fig. 1 is a view in side elevation of our improved die box.

Fig. 2 is an end elevation of same. Fig. 3 is a top plan view of same. Fig. 4 is a view similar to Fig. 1 showing the use of a different sized die. n

Like reference characters refer to like partsv in the different figures. The invention is here shown as applied to a die box of conventional form, the same comprising side walls 1, 1, a bottom 2, a front wall 3 and a rear walla, whereby to inclose a suitable chamber for the retention of powdered soap or other lubricant; According to the usual practice, the side walls 1, 1 provide a transverse opening 5' for'the insertion and removal of'the die, the latter being adapted to bear against the front wall 3 with its hole in registry with. an opening 6 in, said wall for the passage of the wire.

-The-usual method ofdisposing the die in proper position involves the employement of supporting blocks or wedges of the required thickness to obtain the correct height of the die opening; in die boxes of ordinary construction, a screw is employed, acting directly against the upper face of the die to exert a downward pressure thereon,.

whereby to retain it in position. This .method of retention is unsatisfactory; first,

because the contact surfacebetwee'n die and screw is very' limited, owing to the bevel of the die surface; second, because .the retaining force is exerted only in a perpendicular direction and hence does not insure any pressure against the front wall 3 of the box;

third, because the tightening of the screw, whose end is directly in contact with the surface of the die, has a tendency to displace the die laterally; and finally, because I the die, usually trapezoidal in section, tends to tip on its lower edge when the aerpendicular pressure of the screw is applied.

The present invention overcomes the fore going disadvantages by a construction which causes the retaining force to be eX-.

erted obliquely, against the rear upper edge 'of the die, so that simultaneously with the downward pressure on the die thereis exerted a pressur'e to force the die. gairrst the front wall 3 of the box. As shown most clearly in Fig. 1, the small sized die 7, of the usual construction, is supported on a block 8. For the purpose of holding this die in place, the die box at its front end provides a rearwardly directed flapper 9. which is pivoted on a pin 10 extending transversely across the space between the.

walls 1, 1. The lower surface of flapper 9 bears against the rear upper edge of the die, and said flapper on its upper surface is subjected to the pressure of the usual retaining screw 11, which is threaded into ahole 12 provided by a portion 13 of the box which extends across the top thereof at the-front end. To facilitate the en trance of a die from the side of the box,

the flapper 9 is yieldingly maintained in a withdrawn position by means of a spring 14: hearing against an arm 15 thereof.

As'shown in Fig. 4, the construction described is adaptable to the retention of a much larger die 16, said die being seated fon a suitable block or wedge 17. As be- '1. The combination with a box or-holder for a die, of means for retaining the die therein by pressure exerted obliquely downward, whereby to crowd said die against the front wall of said box.

2. The combination with a box or holder for a die, of means carried thereby and en edge of a die therein, and means for exerting downward pressure on said pivoted means, to retain said die in place.

4. The combination with a box or holder for a die, of a member extending rearwardly from the front of said box for engagement with the rear upper edge of a die, and

a screw for exerting downward pressure on said member.

5. The combination with a box or holder for a die, of a member extending rearwardly from the front of said box for engagement with the rear upper edge of a die, said member being pivoted, whereby to adjust itself to different sizes of dies, and

gageable with the rear upper edge of the flmeans for exerting downward pressure on die, to exert a retaining pressure on said (he obliquely.

3. The combination with a box or holder for a die,v of pivoted means carried by said box and adapted to engage the rear upper said member, to retain the die in place.

Dated this 10th day of February, 1922.

JEROME R. GEORGE. ELBERT H. CARROLL. 

